@misc{indiciae69fbb1c1f144,
  title = {A general purpose computer-to-computer interface Xerox Sigma computer-to-DEC PDP 11 computer},
  author = {Fetter, J. L. and Walker, C. M. and Fisher, W.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820035722},
  note = {Source identifier: 19820035722}
}